These units, which were acquired pursuant to the Pfizer Supplemental Savings Plan, are settled in cash following the reporting person's separation from service and may be transferred by the reporting person into an alternative investment account at any time.

Reporting Owners

Reporting Owner Name / Address

Relationships

Director

10% Owner

Officer

Other

BOURLA ALBERT

PFIZER INC.-CORP. SECRETARY 235 EAST 42ND ST.

NEW YORK, NY 10017

X

Chief Executive Officer

Signatures

Susan E. Grant, by power of atty., for Albert Bourla

1/11/2019

**Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

*If the form is filed by more than one reporting person,seeInstruction 4(b)(v).

**Intentional misstatements or omissions of facts constitute Federal Criminal Violations.See18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient,seeInstruction 6 for procedure.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.